Abstract: Located in central Brazil at the border of states of Mato Grosso and Goiás, the Araguainha Dome is the largest impact structure recognized in South America. It has a diameter of 40 km and is morphologically structured in concentric rings of elevations and depressions composed of sedimentary rocks of the Parana Basin around an uplifted granitic core. Several studies about the crater geology have been conducted, however, the lithotype configuration underneath remains mostly unknown. In order to better understand how the rocks are arranged underneath the central peak, a gravity study has been developed, by which information of the Bouguer anomaly has been obtained. The observed regional anomaly exhibit a NE-SW trend which may be related to the basement of the Paraná basin and the Transbrasiliano lineament. Bouguer anomaly map, shows anomaly peaks in the region of central uplift. The Bouguer residual anomaly map presents a positive anomaly related to the granitic core, not coincident with the circular morphology, and with areas of values negative related to the granitic rocks. Anomalies at the core vary from -8.3 mGal to 7.1 mGal. Nevertheless, the anomalies show no direct correlation with the surface geology, suggesting that the spatial configuration of the subsurface geology is different. As a result of inversion applied in residual anomaly data, 3D models of the density were obtained, with upper and lower boundary constraint and reference model. The 3D model resulting from the inversion process shows anomalies observed within ± 0.2 mGal average error, although not able to relate to the geological data and evidence of a geological technique of the structure of Araguainha